Can anyone help me with a few questions regarding gravity fed hot water please?
With a C-PLAN (gravity hot water & fully pumped heating) - is a 4 tapping boiler required or can a standard 2 tapping boiler be used?
Obviously there will be an anti gravity valve installed somewhere after the pump and before the 1st radiator on the circuit so when HW only is required, the radiators do not heat up too.
Also: is a cylinder stat and a 2 port zone valve allowed with gravity HW fed by a solid fuel boiler or is this only allowed for gas and oil boilers with gravity HW due to the solid fuel heat leak that is required? Or with a solid fuel boiler is a cylinder stat allowed by no HW zone valve, again due to the heat leak requirement?
Anyone sure of the exact regs on these issues? Thanks for any help.
With a C-PLAN (gravity hot water & fully pumped heating) - is a 4 tapping boiler required or can a standard 2 tapping boiler be used?
Obviously there will be an anti gravity valve installed somewhere after the pump and before the 1st radiator on the circuit so when HW only is required, the radiators do not heat up too.
Also: is a cylinder stat and a 2 port zone valve allowed with gravity HW fed by a solid fuel boiler or is this only allowed for gas and oil boilers with gravity HW due to the solid fuel heat leak that is required? Or with a solid fuel boiler is a cylinder stat allowed by no HW zone valve, again due to the heat leak requirement?
Anyone sure of the exact regs on these issues? Thanks for any help.